AD5744RBSUZ datasheet(7/32 Pages) AD

Il numero della parte	AD5744RBSUZ

Spiegazioni elettronici	Complete Quad, 14-Bit, High Accuracy, Serial Input, Bipolar Voltage Output DAC

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Produttore elettronici	AD [Analog Devices]

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Preliminary Technical Data

AD5744R

Rev. PrA | Page 7 of 32

TIMING CHARACTERISTICS

AVDD = 11.4 V to 16.5 V, AVSS = −11.4 V to −16.5 V, AGND = DGND = REFGND = PGND = 0 V; REFAB = REFCD = 5 V external;

DVCC = 2.7 V to 5.25 V, RLOAD = 10 kΩ, CL = 200 pF. All specifications TMIN to TMAX, unless otherwise noted.

Table 3.

Parameter1, 2, 3

Limit at TMIN, TMAX

Unit

Description

t1

33

ns min

SCLK cycle time

t2

13

ns min

SCLK high time

t3

13

ns min

SCLK low time

t4

13

ns min

SYNC falling edge to SCLK falling edge setup time

t54

13

ns min

24th SCLK falling edge to SYNC rising edge

t6

40

ns min

Minimum SYNC high time

t7

2

ns min

Data setup time

t8

5

ns min

Data hold time

t9

1.4

μs min

SYNC rising edge to LDAC falling edge (all DACs updated)

400

ns min

SYNC rising edge to LDAC falling edge (single DAC updated)

t10

10

ns min

LDAC pulse width low

t11

500

ns max

LDAC falling edge to DAC output response time

t12

10

μs max

DAC output settling time

t13

10

ns min

CLR pulse width low

t14

2

μs max

CLR pulse activation time

t155, 6

25

ns max

SCLK rising edge to SDO valid

t16

20

ns min

SYNC rising edge to SCLK rising edge

t17

2

μs min

SYNC rising edge to DAC output response time (LDAC = 0)

t18

170

ns min

LDAC falling edge to SYNC rising edge

1 Guaranteed by design and characterization; not production tested.

2 All input signals are specified with tr = tf = 5 ns (10% to 90% of DVCC) and timed from a voltage level of 1.2 V.

3 See Figure 2, Figure 3, and Figure 4.

4 Standalone mode only.

5 Measured with the load circuit of Figure 5.

6 Daisy-chain mode only.

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